Episode Ratings Grid

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Great

Episode Power Rankings

The peaks and the valleys. Find the essential episodes — and the ones to skip.

#1
S1E2 8.7
The Deep

A place of mountain ranges, perpetual night, pressures extremes and cold... and the weirdest life forms on our planet. Dive into the depths of the ocean, an eerie world where predators with teeth so large they can't even close their mouths, chase bio-luminescent creatures of the deep. Discover the spectacular smoking chimneys of the hydrothermal vents. Go deeper down than you have ever been...

#2
S1E1 8.3
Ocean World

Experience the power of the blue whale - the largest mammal ever to grace our planet. Learn how the sun and moon help control and tame the ocean. Travel far and wide - from the Eastern Pacific to Alaska, from the Bering Sea to the shores of Southern California - and begin to understand the complexity and power of our oceans.

#3
S1E4 8.3
Frozen Seas

An environment where only the toughest survive, the Arctic and Antarctic are unrelenting habitats. Only in spring does life begin again. Plankton blooms and feeds fast hordes of migrating fish, walruses rake the seabed for clams, and minke and humpback whales gorge themselves on gigantic swarms of krill. But it is a brief spring feast - the ice soon returns and pushes life back into the ocean.

#4 Coasts S1E8 8.2
#5 Open Ocean S1E3 8.1
#6 Seasonal Seas S1E5 8.1
#7 Coral Seas S1E6 8.1
#8 Tidal Seas S1E7 8.1

Lowlights

#8 S1E7 Tidal Seas 8.1

Tidal marshes are one of the most productive parts of the world. Numerous plants support numerous animals, yet life is not easy: predators are attracted to these enormous quantities of food, forcing animals to seek constant protection from attack.

#7 Coral Seas S1E6 8.1
#6 Seasonal Seas S1E5 8.1
#5 Open Ocean S1E3 8.1
#4 Coasts S1E8 8.2

The Quality Arc

Each point is an episode, plotted in order. Colored bands mark season boundaries. Look for the rise, the plateau, or the decline.

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Episode Engagement

High votes + high rating = beloved classic. High votes + low rating = notorious stinker. Low votes + high rating = hidden gem.

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